Process of manufacturing hydrates of alkalies and alkali earths.



No. 744,920. I PATENTED NOV. 24, 1903.

P. JAHN. PROCESS OPMANUFAOTU-RING HYDRATBS 0P ALKALIES AND ALKALI EARTHS APPLICATION FILED FEB. 2,1903.

N0 MODEL.

lNVENTOR:

No. Mid, 9550.

.tlDLEY PARK, PENNSYLVANIA, fiiSfEilGl Patented November 24, 1903.

0 it TU HAR- (S d: CO, INCORPORATED, 0F Pl-llLADlLLPlllA, PENNSY? A COLPORMIION OF PENNSYLVANIA.

PROCESS OF MANUFACTURING HYDRATES OF ALli/illES Ai ill Alli/ill EAlll'HS.

$PEGIFEGATIDN formingpztrtolhLetters Patent No. 34;i,926, dated November 2 k, 19%) Application filed February 2, 1903. Serial No. 141,577. (No specimens.)

.To all; whom it lit-[6]] cortccwt:

Be it known that i, FREDRIK JAHN, a sub ject of the King; of Sweden and N rvrey, residing at No. 86 Ridley avenue, Ridley Pork, Delaware county, and State of Pennsylvania, hove invented a certain new and useful lrocess for the lrlonufucture of l-lydrntes of A1 ltolics and of Alkaline llnrths, whereof the following is n specification, reference being lied to the accompanying drawing, which represents n. convenient, but not essential, type of ripper-sins adapted for. the conduct of the process.

'llhe objectof my invention is to obtain the eboveonentioncd hydrzttcsby electrolytic dccoinposition of the corresponding suliids, and in describing my process i shall specify the application thereof to the decomposition of barium suliid for the production of barium hydroie,siucc this is at prncticul cmbinlimcnt which l consider very desirable.

The apparatus illustrntcd in vertical coutrnl section in the drawing consists of n cylindricsl vessel A, oi iron, wood lined with loud, or other suitable material adopted to electrolytic conditions. lhe lmttom ol' the vessel and the sides for some distuncc above the bottom are provided with on internal linin E brickwork or cement so constructed as to constitute an insulated support forthennodc ii. The anode maybe it disk-slniped piece or heavy iron resting upon the bottom lining and fitting snugly within the sides. Upon the anode i3 is placed 2t mass 0 of ii'oirturnings or other porous body of iron hoving on extended surface, The cathode C may conveniently be constructed in the form of a thin perforated wrought iron plate. rotntably mounted upon it depcndlng slnift 1;, having it driving-pulley D'nnd saturating-belt cl, so that it stirring action may be readily obtained.

Tihe electricul connections for the anode and cathode are indicated at E and F, respectively, the former being insulated from the electrolyte by moons of a rubber tube or other proper coverings; extending above the l rel oi the iiqi in. The rcssel A is provided rri ii c steam-inlet i no ll, hey ngc retir ng, and c dischrs'ge- I pipe ll, controlled by a clamp or stopcock at h.

The operation is as follows: The vessel having been filled with an aqueous solution oi. beriuin suliid to a level above-that. of the cathode, on electric current is supplied from any suitable source, the cathode being slowly rotated during the electrolysis. It is desir oble, of course, to avoid. crystallization dur the conduct of the process, and hence at too commencement of the operation steam. may he admitted, by means of the pipe G, to raise the temperature of the electrolyte. After t-he'nction has get fully underway, however, it will generally be found that the best incidentnlly developed by the electrolysis Will suffice to present the formation of crystals.

The sulfur libero-ted from its original C0111" binzttion unites with the porous mess of ironturnings, whose extended surface facilitates this result, so that the decomposition of the whole oziriuinsullid content can be rendily effected, thelcvelof the electrolyte being maintained by additions of water until. the

action is complete. Thereupon the liquor,

which is now wholly an aqueous solution of buriuin hydrate, is drawn 0d and boiled down to the proper density for ready crystallization, which should be conducted in closed recel'r toclcs to avoid the access of air.

Moving thus described my invention, wouldpoint out that its underlying principle is the electrolytic decomposition of s sullld in the presence of an anode capable of form.- ing it stable sulfur compound insoluble in the electrolyte sndnot tending" to destructive recombination therewitlusuch anode being of such physical constitution and arrange inent as to present a relatively extended surface to the action of the sultur ions. While, therefore, I hevespecilied and shsllhereinatftor claim the particular application of the process to the manufacture of barium hydrate, I do not desire to be understood as limiting my claims to such application.

I chtin1 l. The orocessof olitoinin l1 dretes of oi:

helices and slimline earths, which consists in sub ecting sulfide thereof, in aqueous solution, to electrolytic action in the presence of an extended porous anode mass of material whose sulfid is physieallyand chemically resistant to the action of the residual electrolyte, substantially as set forth.

2. The process ofobtainingbariumhydrate, which consistsin subjecting sulfid of barium, in aqueous solution to electrolytic action in the presence of an extended anode mass of material whose sulfid is physically and chemically resistant to the action of the residual electrolyte, substantially as set forth.

d 3. The process ofobtainingbarinm hydrate,

which consists in subjecting sulfid of barium, in aqueous solution to electrolytic action, in the presence of an anode mass of finely-divided iron, substantially as set forth.

In testimony whereof I have signed my name to this specification, this 26th day of January, 1903, in the presence of two subscribing witnesses.

FREDRIK JAHN. 

